If you are still interested in Michael Leahy abt 1817-1830 I am one of his gggranddaughters. I have found him, wife and one child in the England 1851 census. They had their second child (James 1851- 1906) in England before coming to US. Five more children were born in Pennsylvania: Joseph b. abt 1855/57- 1945; Philip (my ggrandfather) b. 1858, Walter b abt 1861/63, Martin b. abt 1864- 1938 and Mary b. abt 1865. I have that both Michael and Anastasia's death place as Clinton, Pennsylvania. I am pretty sure this is the Clinton that is in Beaver Co. If you are interested in communicating let me know.